Are redheads going extinct?

Some news organizations have reported that redheads will disappear by the year 2060. Follow the redhead extinction story and learn whether blondes will go extinct, too.

Are we 10 years away from artificial life?

Some researchers on the quest for artificial life say they're only 10 years away from their goal. But could these artificial life forms turn into a science fiction nightmare?

Are we all descended from a common female ancestor?

According to DNA research, we may all have a common ancestor, an African woman who lived thousands of years ago. How did scientists reach this conclusion? Is it even possible?

Can genetically modified mosquitoes wipe out malaria?

In theory, if you could create a stronger mosquito that's unable to spread malaria and release them into the wild, they would replace the mosquitoes that can spread the disease. But until recently, there has been a major glitch in this concept.

Can scientists make moths gay?

Scientists tricked male brown-tailed moths into trying to mate with one another instead of the females. But are sexuality and gender actually fluid concepts in the animal world? Explore animal sexuality, from intersexual clams to homosexual giraffes.

Could gene therapy cure baldness?

Hair loss affects millions of Americans -- men, women and even children. That's why a recent gene therapy study from a research group at the University of Pennsylvania has many people excited.

Could scientists resurrect the dodo bird?

The dodo bird could be brought back from extinction thanks to the recent discovery of an intact dodo skeleton. Read about the recent dodo bird discovery.

How Cells Work

The human body is composed of about 10 trillion cells. Everything from reproduction to infections to repairing a broken bone happens down at the cellular level. Find out all about cells.

How Cloning Works

Cloning is the process of making a genetically identical organism through nonsexual means. In this article, we will examine how cloning works and look at possible uses of this technology.

How Cryonics Works

Dozens of people are frozen in cryogenic storage facilities, waiting to be revived when science is able to cure whatever killed them. But if they're dead, is revival from a frozen state even possible? Find out.

How DNA Evidence Works

DNA evidence is now as important as fingerprints in convicting criminals and freeing innocent suspects. Find out about DNA "fingerprinting" -- how your DNA can be used to identify you.

How DNA Works

Like the one ring of power in Tolkien's fantasy trilogy, "Lord of the Rings," deoxyribonucleic acid (DNA) is the master molecule of every cell. From its structure to what it does, learn all about DNA.

How Human Cloning Will Work

Scientists in South Korea claim to have created human embryos via cloning. This could radically change the medical landscape -- therapeutic cloning could be used to combat diseases like Parkinson's and Alzheimer's.

How Stem Cells Work

We hear about them on the news, we listen to politicians argue for and against them and most of us can’t help but take notice when someone utters the word “clone.” Learn all about stem cells.

How Twins Work

We take it for granted that we're completely different from any other person, yet twins are unique people who are also eerily similar to each other. Learn how twinning happens and what types of twins are out there.